from django.db import models
from _datetime import  datetime
from django.db import models
# Create your models here.

class Course(models.Model):
    name = models.CharField(max_length=50,verbose_name=u'课程名')
    desc = models.CharField(max_length=300,verbose_name=u'课程描述')
    detail = models.TextField(verbose_name=u"课程详情")
    degree = models.CharField(choices=(("cj","初级"),("zj","中级"),('gj',"高级")),max_length=2)
    learn_times = models.IntegerField(default=0,verbose_name=u"学习时长(分钟)")
    students = models.IntegerField(default=0,verbose_name=u"学习人数")
    fav_nums = models.IntegerField(default=0,verbose_name=u"收藏人数")
    image = models.ImageField(upload_to="courses/%Y/%m",verbose_name=u"封面图",max_length=100)
    click_nums = models.IntegerField(default=0,verbose_name=u"点击数")
    add_time = models.DateTimeField(default=datetime.now,verbose_name=u'添加时间')

    class Meta:
        verbose_name = u"课程"
        verbose_name_plural = verbose_name

class Lesson(models.Model):
    course = models.ForeignKey(Course,verbose_name=u"课程",on_delete=models.CASCADE)
    name = models.CharField(max_length=100,verbose_name=u"章节名")
    add_time = models.DateTimeField(default=datetime.now,verbose_name=u"添加时间")

    class Meta:
        verbose_name = u"章节"
        verbose_name_plural = verbose_name

class Video(models.Model):
    lesson = models.ForeignKey(Lesson,verbose_name=u"章节",on_delete=models.CASCADE)
    name = models.CharField(max_length=100,verbose_name=u"课程名")
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")

    class Meta:
        verbose_name = u"视频"
        verbose_name_plural = verbose_name


class CourseResourse(models.Model):
    course = models.ForeignKey(Course,verbose_name=u"课程",on_delete=models.CASCADE)
    name = models.CharField(max_length=100,verbose_name=u"名称")
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")
    download = models.FileField(upload_to="course/resourse//%Y/%m",verbose_name=u'资源文件',max_length=100)

    class Meta:
        verbose_name = u"课程资源"
        verbose_name_plural = verbose_name